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Fixed #25869 -- Added trim and precision properties to WKTWriter.

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Sergey Fedoseev 2015-12-05 19:05:52 +05:00 • committed by Claude Paroz
parent cd3c042b04
commit c984e2bc15
4 changed files with 108 additions and 3 deletions
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38
docs/ref/contrib/gis/geos.txt
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@ -1052,6 +1052,44 @@ Returns the WKT of the given geometry. Example::
>>> wkt_w.write(pnt)
'POINT (1.0000000000000000 1.0000000000000000)'
.. attribute:: WKTWriter.trim
.. versionadded:: 1.10
This property is used to enable or disable trimming of
unnecessary decimals.
>>> from django.contrib.gis.geos import Point, WKTWriter
>>> pnt = Point(1, 1)
>>> wkt_w = WKTWriter()
>>> wkt_w.trim
False
>>> wkt_w.write(pnt)
'POINT (1.0000000000000000 1.0000000000000000)'
>>> wkt_w.trim = True
>>> wkt_w.write(pnt)
'POINT (1 1)'
.. attribute:: WKTWriter.precision
.. versionadded:: 1.10
This property controls the rounding precision of coordinates;
if set to ``None`` rounding is disabled.
>>> from django.contrib.gis.geos import Point, WKTWriter
>>> pnt = Point(1.44, 1.66)
>>> wkt_w = WKTWriter()
>>> print(wkt_w.precision)
None
>>> wkt_w.write(pnt)
'POINT (1.4399999999999999 1.6599999999999999)'
>>> wkt_w.precision = 0
>>> wkt_w.write(pnt)
'POINT (1 2)'
>>> wkt_w.precision = 1
>>> wkt_w.write(pnt)
'POINT (1.4 1.7)'
.. rubric:: Footnotes
.. [#fnogc] *See* `PostGIS EWKB, EWKT and Canonical Forms <http://postgis.net/docs/using_postgis_dbmanagement.html#EWKB_EWKT>`_, PostGIS documentation at Ch. 4.1.2.